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Finding the Fourth Proportional to 356,999.09, 535,638.67 and 157,179.32

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Solution

The fourth proportional to 356,999.09, 535,638.67 and 157,179.32 is: 235,830.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,999.09 : 535,638.67 = 157,179.32 : x
  2. Step 2: Convert to fraction form
    356,999.09/535,638.67 = 157,179.32/x
  3. Step 3: Cross multiply
    356,999.09x = 535,638.67 × 157,179.32
  4. Step 4: Simplify right side
    356,999.09x = 84,191,318,452.21
  5. Step 5: Solve for x
    x = 84,191,318,452.21/356,999.09
  6. Step 6: Final answer
    x = 235,830.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.